package com.yang.app;
import java.io.IOException;

import org.apache.hadoop.io.IntWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapreduce.Reducer;

public class MaxTemperatureReducer
		extends Reducer<Text, IntWritable, Text, IntWritable> {

		@Override
		public void reduce(Text key, Iterable<IntWritable> values,
						Context context)
		throws IOException, InterruptedException{
			int maxValue = Integer.MIN_VALUE;
			for (IntWritable value : values) {
					maxValue = Math.max(maxValue, value.get());
			}
			context.write(key, new IntWritable(maxValue));
		}
}
